Tool/software:
Hello
We have fopen() / fprintf() / fclose() - function calls on C7 - working well and outputting data to a file on the debug folder on the PC.
However, we can't get it to work on A53 core. fopen() always returns NULL.
We are thinking maybe this is a problem with semihosting not enabled, what do you think?
How to get fopen() / fprintf() work on A53 ?
Thanks in advance
Guy
Hi Guy,
To make the semihosting enable while compiling through GCC, you will need to link the libc.a and librdimon.a library.
To link the above mentioned library, add the -lc and -lrdimon flag to linker command. Also remove the -nostartfiles flag to allow linking of standard libraries.
Please refer below image.
Add the --specs=rdimon.specs flag in GCC compiler args to use the semihosted version of the syscalls. Please refer below image.
Once the above changes is done, add the below function call in *.c file.
extern void initialise_monitor_handles(void);
Also call the above function before making any system calls. Please refer below image.
Make sure you enable the semihosting option in the debugger. Navigate to Tools -> Debugger -> Program/Memory Load Options.
Rebuild the program and run it again.
Please let us know if the above solution works.
Regards,
Tushar
